Welcome to Skies and Universes python documentation

This set of modules helps exploiting the observed and simulated data available through the skies and universes data base http://projects.ift.uam-csic.es/skies-universes/

It currently contains observed galaxy spectra from DEEP2, VVDS and VIPERS. It also hosts parts of the N body simulation: MultiDark and its projections into mock catalogs for emission line galaxies and quasars.


If you use this code as a ressource to produce a scientific result, please :
  • cite the paper Comparat et al. 2016 https://arxiv.org/abs/1605.02875
  • and acknowledge the skies and universes database as follows : “The skies and universes database is hosted by the UAM/CSIC-IFT cloud and funded by the Spanish MICINNs Consolider-Ingenio 2010 Programme, the MultiDark CSD2009-00064 grant and the MINECO Centro de Excelencia Severo Ochoa Programme under the grants SEV-2012-0249, FPA2012-34694, and the projects AYA2014-60641-C2-1-P and AYA2012-31101.”


requirements :
  • python 2.7.8 and its main packages all installable through pip: numpy, scipy, matplotlib, math ...
  • astro dependencies: astropy, pyneb. Both are also installable with pip

git clone https://github.com/JohanComparat/pySU.git

Add all the python folders you can list them like this: ls $PYSU_DIR/*/python) to your pythonpath.

Galaxy surveys

Scripts to construct catalogs

  • calibrate_DEEP2_spectra : performs the flux calibration of DEEP2 spectra
  • fit_lines_DEEP2_fc_spectra : fits emission lines on the DEEP2 spectra
  • fit_lines_VIPERS_spectra : fits emission lines on the VIPERS spectra
  • fit_lines_VVDSWIDE_spectra : fits emission lines on the VVDS WIDE spectra
  • fit_lines_VVDSDEEP_spectra : fits emission lines on the VVDS DEEP spectra
  • fit_lines_VVDSUDEEP_spectra : fits emission lines on the VVDS UDEEP spectra
  • compute_line_luminosities_DEEP2 : adds line luminosities in a given cosmology
  • compute_line_luminosities_VIPERS : adds line luminosities in a given cosmology + aperture correction
  • compute_line_luminosities_VVDS : idem
  • plotSurveys : produces summary plots related to the surveys

Scripts to measure luminosity functions

In the folder galaxy/bin_LF

  • runLFanalysis : all the steps to reproduce the [OII], Hbeta, [OIII] LF paper, Comparat et al. 2016 https://arxiv.org/abs/1605.02875
  • estimate_line_LF : estimates the emission line luminosity function of the DEEP2, VVDS, and VIPERS surevy

In the folder galaxy/bin_stack

  • stack_spectra_DEEP2 or _VVDSDEEP : stacks the spectra issued from the luminosity function

MultiDark N body simulations

For exhaustiveinformation on MultiDark, please visit: https://www.cosmosim.org/


in the folder multidark,
  • bin_DF : scripts related to density field analysis
  • bin_MD : scripts transforming MultiDark database catalogs into light versions to work with
  • bin_onePT : scripts to compute 1-point functions
  • bin_twoPT : scripts to compute 2-point functions

Stellar population model

Library in development (caution !), it is the twin of FIREFLY developed in ICG portsmouth and described in Wilkinson et al. 2015 https://arxiv.org/abs/1503.01124 and soon in greater details in Wilkinson et al. in prep.

Indices and tables